V445 Близнецов

V445 Близнецов
Звезда
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Наблюдательные данные
(Эпоха J2000.0)
Прямое восхождение 6ч 44м 2,35с[1]
Склонение +12° 22′ 34,33″[1]
Расстояние 573,1973 ± 9,4952 пк[1]
Созвездие Близнецы
Астрометрия
Собственное движение
 • прямое восхождение 4,123 ± 0,044 mas/год[1]
 • склонение 0,448 ± 0,04 mas/год[1]
Параллакс (π) 1,7446 ± 0,0289 mas[1]
Спектральные характеристики
Переменность затменная типа W Большой Медведицы[2]
Коды в каталогах
NSVS 9846455, 2MASS J06440234+1222342, Gaia DR2 3352390856942682624, ASAS J064403+1222.6, V445 Gem, ATO J101.0098+12.3762 и TIC 59775436
Информация в базах данных
SIMBAD ASAS J064403+1222.6
Логотип Викиданных Информация в Викиданных ?

V445 Близнецов (лат. V445 Geminorum) — двойная затменная переменная звезда типа W Большой Медведицы (EW)[3] в созвездии Близнецов на расстоянии приблизительно 1 870 световых лет (около 573 парсек) от Солнца. Видимая звёздная величина звезды — от +13,9m до +13,25m[4]. Орбитальный период — около 0,3176 суток (7,6217 часа)[2].

Характеристики

Первый компонент — жёлтый карлик спектрального класса G. Радиус — около 1,13 солнечного, светимость — около 1,158 солнечной. Эффективная температура — около 5629 К[1].

Второй компонент — жёлтый карлик спектрального класса G.

Примечания

  1. ↑ 1 2 3 4 5 6 7 Gaia Data Release 2 (англ.) / Data Processing and Analysis Consortium, European Space Agency — 2018.
  2. ↑ 1 2 N. N. Samus’, Kazarovets E. V., Durlevich O. V., Kireeva N. N., Pastukhova E. N. General catalogue of variable stars: Version GCVS 5.1 (англ.) // Astronomy Reports / D. Bisikalo — MAIK Nauka/Interperiodica, Springer Science+Business Media, 2017. — Vol. 61, Iss. 1. — P. 80–88. — ISSN 1063-7729; 1562-6881; 0004-6299 — doi:10.1134/S1063772917010085
  3. ↑ Kreiner J. M. Up-to-date linear elements of eclipsing binaries (англ.) // Acta Astronomica / M. Kubiak — Copernicus Foundation for Polish Astronomy, 2004. — Vol. 54. — P. 207–210. — ISSN 0001-5237
  4. ↑ V445 Gem, database entry, Combined General Catalog of Variable Stars (GCVS5.1, 2017 Ed.), N. N. Samus, O. V. Durlevich, et al., CDS ID II/250 Архивная копия от 1 июля 2015 на Wayback Machine Accessed online 2022-05-24.

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